Ferro Chrome Nqe Ib Tuj
1. Hauv chav kuaj, bromobenzene yog npaj los ntawm kev siv benzene thiab bromine nyob rau hauv high-carbon ferrochromium ntxuav hlau los yog hlau filings raws li ib tug catalyst.
2. Ua tib zoo tswj cov tshuaj tiv thaiv ceev. Nws yog qhov tsim nyog rau cov kua dej ntawm cov reactants kom boil me ntsis, tab sis tsis dhau hnyav. Txwv tsis pub, ib qho loj ntawm benzene thiab bromine yuav evaporate thiab ua rau kev sim ua tsis tiav. Lub raj ntev perpendicular mus rau lub qhov ncauj ntawm lub raj mis tuaj yeem tsis tsuas yog ua cov pa roj, tab sis kuj tseem ua haujlwm ua cov roj hluav taws xob. Kev ua haujlwm ntawm lub condenser ua rau cov evaporated benzene lossis bromine reflux rov qab.
Tsawg Carbon Ferro Chrome Nqe
3. Hydrogen bromide dissolves rau hauv dej hauv Erlenmeyer flask los tsim hydrobromic acid. Yog li ntawd, tom qab cov tshuaj tiv thaiv tiav lawm, tso cov nyiaj nitrate rau hauv lub raj mis Erlenmeyer, thiab lub teeb daj nyiaj bromide yuav ua kom dej nag: HBr + AgNO3=AgBr↓ + HNO3.
4. Muab cov khoom tso rau hauv lub khob rau hauv lub khob ntim dej uas muaj dej distilled. Nyob rau hauv qab ntawm lub beaker muaj ib tug brownish-xim av dej-insoluble kua. Qhov no yog bromobenzene. Nws yog cov kua uas tsis muaj xim hnyav dua li dej. Nws tau yaj bromine. Feem ntau tshwm xim av.
5. Tshem tawm cov bromine los ntawm bromobenzene, ntxuav nws nrog alkali tov (feem ntau 10% NaOH), thiab ces cais nws nrog ib tug cais funnel.
Ferro Chrome Nqe
Lus Cim: Ua tib zoo saib xyuas cov tshuaj tiv thaiv ceev. Nws yog tsim nyog rau cov kua nto ntawm lub reactant kom boil me ntsis. Nws yuav tsum tsis txhob ua nruj ua tsiv. Txwv tsis pub, ib qho loj ntawm benzene thiab bromine yuav evaporate thiab ua rau kev sim ua tsis tiav. Lub raj ntev perpendicular mus rau lub qhov ncauj ntawm lub raj mis tuaj yeem tsis tsuas yog ua cov pa roj xwb, tab sis kuj yog ib qho kev qhia. Kev ua haujlwm ntawm lub condenser ua rau cov evaporated benzene lossis bromine reflux rov qab.
